Daniel mills



(No Model.)

D. MILLS.

PORTABLE MILLING MAUHINE.

No. 825,559. Patented Sept. 1, 1885.

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UNITED STATES DANIEL MILLS, OF PHILADELPHIA, PENNSYLVANIA, AS SIGNOR TOTHE PHILADELPHIA MACHINERY OOMPAXY, OF SAME PLACE.

PORTABLE MILLING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 325,559, datedSeptember 1, 1885.

Application filed January 30, 1885.

To all whom, it may concern:

Be it known that I, DANIEL MILLs, a citizen of the United States,residing in Philadelphia, Pennsylvania, have invented certainImprovements in Portable ldilling-Machines, of which the following is aspecification.

My invention consists of a portable millingmachine for milling anddressing the slots of the underground conduits of cable railways, asfully described and claimed hereinafter.

In the accompanying drawings, Figure 1 is a plan View of the machine,and Fi 2 is a side view, partly in section.

In cable railways the slot along the top of the cable-conduit, throughwhich the stem of the grip passes downward from the car, is apt to beirregular and uneven in width,owiug either to defects in construction,expansion, or contraction of the metal or the pressure of the earth onthe sides of the tube or conduit.

My invention is designed to dress or mill out the slot to a uniformwidth; and it consists, essentially, of a car adapted to the track, andcarrying an adjustable milling'tool and guide, and devices to beoperated by hand or power to drive the tool and traverse the car.

A is the frame of the car, mounted 011 wheels B B of the proper gage forthe track, and 011 this car are mounted the millingtool and itsoperating devices. In the drawings I have shown these devices asarranged to be driven by a motor, D, consisting of a steam-engine and aboiler; but they may be operated by hand by means of suitablecrank-handles, as indicated by dotted lines.

To a standard, E, on the frame of the car is pivoted an arm, I carryingat its lower end a rotary milling-tool, M, which occupies a positionlaterally on the millingcar identical with that occupied by the stem ofthe grip on the cablecar, so that when the arm F is depressed the edgeof the tool M will enter the slot of the tube in the proper position.The arm F is pivoted with a bolt and handled nut, f, adapted to a curvedslot in the standard E, whereby the arm F may be secured in any positionto which it may be adjusted.

On the arm F, immediately behind the mill ring-tool, is mounted aguidefiuger, G, which (No model.)

projects into the dressed slot of the tube and guides the milling-tool.The latter may be driven from the crank-shaft (l of the engine by anysuitable gearing, that shown in the drawings consisting of a pinion, 1,on the said crankshaft, gearing into aspur-whecl, 2, on the pivotpin ofthe arm F, and to the wheel 2 is secured a pinion, 3, gearing into aspur-wheel, 4, on the arm F, and this spur-wheel I gearsinto a pinion,5, on the axis of the milling-tool.

In order to slowly traverse the car forward on the track at the sametime that a rapid rotary motion is imparted to the millingtool, I employworm and worm-wheel gearing for transmitting motion from the motor tothe rear axle, which gearing can be thrown into and out of action at thewill of the operator. In the present case I have shown a wormwheel, 9,on the rear axle of the car, and into this may be geared a worm, S, onashai't, p, which is mounted in bearings in an adjustable lever, K, andcarries at its other end a wormwheel, 7, gearing into a worm, 6, on themotor. The lever K is mounted on a pivot on a standard, Z, on the frameof the car, the center of the pivot being coincident with the center ofthe worm 6, so that by the movement of the lever K on this center theworm 8 may be thrown into and out of gear with the wormwheel 9 withoutdisengaging the worm 6 and wheel 7. A bolt and nut, it, passing throughthe lever and a curved slot in the standard E on the car permit thesecuring of the lever K in any position to which it may be adjusted.

When the milling-car has been transported to the place where it is to beused, the devices are set in operation by hand or power, and themilling-tool M is depressed into the slot of the cable-tube, and thenthe worm 8 may be thrown into gear wit-h the wheel 9, so as to traversethe car forward as the milling operation proceeds.

I claim as my invention- 1. The combination of a car mounted on wheelsadapted to traverse the track of a cable railway with an adjustablemilling tool and driving-gear carried by said car, substantially as setforth.

2. The combination of a car mounted on wheels adapted to traverse thetrack of a cable of the ear, and devices, substantially as derailwaywith an adjustable arm carrying a scribed, for throwing the latter gearinto and milling-tool and driving-gealyland a guide-finout of action.ger adapted to enter the slot of the cable-tube, In testimony whereof Ihave signed my name 5 substantially as set forth. to this specificationin the presence of two sub 1 3. The combination of the ear adapted toscribing witnesses.

traverse the track of a cable railway and a motor and milling-toolmounted thereon with i Vitnesses: gearing for transmitting motion to thetool, I HUBERT HoWsoN,

1o gearing for transmitting motion to the wheels HENRY HOWSON, Jr.

DANL. MILLS.

